adapted M1 patches, vmnet patches, macos sdk 11.0 from thefloweringha…

…sh, xattr fixes for p9fs, fix for mkdir in qemu-vm

README.md

@@ -222,15 +222,25 @@ With following changes in place:
 - https://github.com/dermetfan/nixos-shell/commit/28ea39e0b76698e7dbd198e9755d7dbc12bf5146
 - https://github.com/r2r-dev/nixpkgs/commit/58142a0fa46a3e920cb4e92fcd0420eeec62ae27
 - https://github.com/NixOS/nixpkgs/pull/72354
+- https://mail.gnu.org/archive/html/qemu-devel/2021-02/msg04637.html
+- https://patchwork.kernel.org/project/qemu-devel/patch/[email protected]/
+- https://patchwork.kernel.org/project/qemu-devel/list/?series=400619&state=%2A&archive=both
+- https://github.com/thefloweringash/nixpkgs/tree/apple-silicon/pkgs/os-specific/darwin/apple-sdk-11.0
+- https://github.com/thefloweringash/nixpkgs/blob/apple-silicon/pkgs/os-specific/darwin/rewrite-tbd/default.nix
+
 
 It is possible to use nixos-shell on darwin host. Word of notice, you will need a remote x86_64-linux builder in order to produce a VM image.
 
 ```
 # Install nixos-shell from source:
 nix-env -i -f .
 
-# Run darwin example:
-nixos-shell examples/darwin.nix -- -- --argstr system x86_64-linux -I nixpkgs=http://github.com/r2r-dev/nixpkgs/archive/58142a0fa46a3e920cb4e92fcd0420eeec62ae27.tar.gz
+# Build darwin example:
+nixos-shell examples/darwin.nix -- -- --argstr system x86_64-linux -I nixpkgs=http://github.com/r2r-dev/nixpkgs/archive/f68911645209742013dd6abe570a23548d9a5780.tar.gz --option builders-use-substitutes true
+
+# Grab build output and run is as root (if you wish to use vmnet)
+sudo /nix/store/somehash-nixos-vm/bin/run-nixos-vm
+
 ```
 
 ## More configuration

examples/darwin.nix

@@ -39,15 +39,24 @@
     shareExchangeDir = true;
 
     qemu = {
+      options = [ "-accel hvf" ];
+       # use vmnet adapter
       networkingOptions = [
-        "-net nic,netdev=user.0,model=virtio"
-        "-netdev user,id=user.0,hostfwd=tcp::2222-:22"
+        "-net nic,model=virtio,netdev=hn0"
+        "-netdev vmnet-macos,id=hn0,mode=bridged,ifname=en8"
       ];
       pkgs = import <nixpkgs> {
         system = "x86_64-darwin";
         overlays = [
           (self: super: {
             qemu = super.qemu.overrideAttrs (attrs: {
+              buildInputs = attrs.buildInputs
+                ++ [ super.darwin.apple_sdk_11.frameworks.vmnet ];
+              sandboxProfile = ''
+                (allow file-read* file-write* process-exec mach-lookup)
+                ; block homebrew dependencies
+                (deny file-read* file-write* process-exec mach-lookup (subpath "/usr/local") (with no-log))
+              '';
               preConfigure = attrs.preConfigure
                 + "substituteInPlace meson.build --replace 'if exe_sign' 'if false'";
             });